Can I sanitize jeans by putting them in the freezer overnight?

No, freezing them will not kill bacteria. Here's an article on it:

https://www.smithsonianmag.com/science-nature/the-myth-of-the-frozen-jeans-129092730/

I personally wouldn't consider this valid without verifiable evidence.

I doubt it.

The Myth of the Frozen Jeans | Science | Smithsonian

https://www.smithsonianmag.com/science.../the-myth-of-the-frozen-jeans-129092730/

Freeze Wash Your Jeans: 6 Steps (with Pictures) - Instructables

https://www.instructables.com › home › life-hacks

Mariana

It doesn't appear that this is true from the info I found. Sorry.

According to Stephen Craig Cary, a university of Delaware expert of frozen microbes, freezing will not always kill the bacteria, but rather put them in a dormant state until they come in contact with something warm.

Dear ladies and gentleman who kindly have sent such quick answers:thank you so much for them.Now I know better.

I'm not quite sure why you don't want to just wash them, but you can use ammonia in the laundry to disinfect without discoloring the fabric. I always turn my jeans inside out when washing them to prolong the color. I would line them dry also.